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2 - BACTERIOWEB

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Structure of bacterial efflux systems<br />

One component systems<br />

– Mostly in Gram positive species (except Tet...)<br />

– A single transporter protein in the cytoplasmic membrane<br />

– Determines the substrate specificity and resistance<br />

Three component (tripartite) systems<br />

– Exclusively in Gram negative species (GNB)<br />

♦ A transporter protein<br />

♦ A periplasmic adaptor lipoprotein<br />

♦ A outer membrane channel protein<br />

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